16 citations · 27 across the 4 of their papers we have counts for
5 papers
Pulse-induced acoustoelectric vibrations in surface-gated GaAs-based quantum devices
S. Rahman, T. M. Stace, H. P. Langtangen +2
We present the results of a numerical investigation which show the excitation of acoustoelectric modes of vibration in GaAs-based heterostructures due to sharp nano-second electric…
A finite element analysis of a silicon based double quantum dot structure
S. Rahman, J. Gorman, C. H. W. Barnes +2
We present the results of a finite-element solution of the Laplace equation for the silicon-based trench-isolated double quantum-dot and the capacitively-coupled single-electron tr…
A numerical investigation of a piezoelectric surface acoustic wave interaction with a one-dimensional channel
S. Rahman, M. Kataoka, C. H. W. Barnes +1
We investigate the propagation of a piezoelectric surface acoustic wave (SAW) across a GaAs/AlGaAs heterostructure surface, on which there is fixed a metallic split-gat…
A finite element method for modelling electromechanical wave propagation in anisotropic piezoelectric media
S. Rahman, H. P. Langtangen, C. H. W. Barnes
We describe and evaluate a numerical solution strategy for simulating surface acoustic waves through semiconductor devices with complex geometries. This multi-physics problem is of…
Classical electrodynamics from the motion of a relativistic fluid
Sabbir Rahman
We show that there exists a choice of gauge in which the electromagnetic 4-potential may be written as the difference of two 4-velocity vector fields describing the motion of a two…